Pressure-exerting machine.



Patented Aug. 26, 1902.

J. A. COSTELLO & w. s. BIBLE.

PRESSURE EXERTING MACHINE.

(Application filed June 2, 1902.\

(No Model.)

mvggs 0O 5 3 Y eLZ fiqm'romvlsys WITNESSES ga g UNIIED STATES J PATENT OFFICE.

JOSEPH A. COSTELLO AND WILLIAM S. BIDLE, OF CLEVELAND, OHIO.

PRESSURE-EXERTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 707,553, dated August 26, 1902. Application filed June 2, 1902. Serial No. 109,931. (No model.)

To aZZ whom it may concern.-

Be it known that we, JOSEPH A. COSTELLO and WILLIAMS. BIDLE, citizens of the United States of America,'residing at Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Pressure-Exerting Machines; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

Our invention relates to improvements in pressure-exerting machines suitable for use in gripping, pressing and forging opera tions-as, for instance, in gripping or exerting pressure against a blank or stock which is to be converted or formed into a predetermined article of manufacture; and our invention pertains more especially to a machine of the character indicated, which comprises a suitably-guided pressure-exerting block capable of reciprocation and actuated by a suitably-operated toggle-joint.

The general object of this invention is to permit the pressure-exertin g block to dwell a suitable length of time in engagement with the object to be operated upon and to avoid breakage of or injury to any portion of the mechanism of the machine by an excess of material in or displacement of the said object or by any obstructing matter obtaining ingress to the space entered by the blank, stock, or material which is to be pressed against or otherwise operated upon by the said block.

With this object in view our invention consists in certain features of construction and combinations of parts hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure I is a topplan, largely in section, of a portion of a pressure-exerting machine embodying our invention. Fig. II is a side elevation in sec tion on line H II, Fig. I, looking in the direction indicatedby the arrow. Fig. III is a vertical section on line III III, Fig. I, looking in the direction indicated by the arrow.

Referring to the drawings, a designates the stationary horizontally-arranged bed of the machine, and l) a crank-shaft arranged horizontally at one end of and supported from the bed a and driven in any approved manner, A pressure-exerting block dis arranged at and supported from the opposite end of the bed a. The block (2 is capable of reciprocation and has its line of travel arranged parallel with the shaft 1). The shaft band the block d are arranged, therefore, a suitable distance apart longitudinally of the bed a. The block (I is arranged to operate between two guide-forming walls e and f, with which the bed a is provided. The walls 6 and fare arranged at theinner side and outer side, respectively, of the path of the block d. The block 01 is operated by a toggle-joint arranged at one end of the said block longitudinally between the said block and a thrustblock 9. The two links it and It of the said toggle-j oint are pivoted together vertically at their adjacent ends, as at Z, centrally between the blocks (Z and g. The link it is pivoted vertically at its opposite end, as at m, to the block 01, and the link 7c is pivoted vertically at its opposite end, as at a, to the thrustblock 9. a Y.

- The block (Z is provided at thebottom and at its toggle-joint-connecting end with a fiat horizontally-arranged extension d',which normally extends in under the aforesaid togglejoint. The block extension (1 is provided at its outer side edge with an'upwardly-projecting flange d which extends from the block proper to the outer or free end of the said extension and has bearing at its outer side against the inner surface of the barf, which extends along the said flange toward the thrust-block g. The flange d is provided upon its inner side and next adjacent to the knuckle of the aforesaid toggle-joint with an inwardly-projecting stop-forming lug d arranged to engage the said knuckle when the links of the said toggle-joint are arranged approximately in line when the block at is performing its function of engaging the object (not shown) to be operated upon. The link of the aforesaid toggle-joint, adjacent to the knuckle of the said joint, is pivoted vertically, as at o, to the adjacent end of the link 5 of another toggle-jointp, which is arranged longitudinally between the knuckle of the firstinentioned toggle-joint and a slide 8, which is capable of reciprocation and arranged to operate between the shaft 2) and the travel of the block (Z, and the other link 6 of the togglejoint 19 is pivoted vertically, as at r, to the said slide. The two links 5 and 6 are pivoted vertically to each other at the knuckle of the joint, as at t. It will be observed, therefore, that the first-mentioned toggle-joint is operatively connected at its knuckle, through the medium of the toggle-joint p, with the slide 3, which is operatively connected by a pitman u with the crank c of the shaft 19, and the bed a is provided with walls 7, arranged to form guides for the said slide, which rests upon the bottom of the recess or slideway formed between the said walls. The slide 3 is provided at its toggle-joint-connecting end and at the bottom with an extension 8, which is integral or rigid with the slide and projects in the direction of the travel of the block d. The member s is arranged in under the tog gle-joint p.

At one side of the toggle-jointp is a spring containing casej, which is carried by the slide extension 8' and is normally arranged at right angles to the travel of the slide 8. As shown, the case j is arranged in a horizontal plane between two horizontally-arranged arms 8 with which the slide extension 8 is provided above and below the said case, respectively, and the case is vertically pivoted, as at j, to and between the free ends of the said arms. A rod w extends into and longitudinally of the case 7' and is pivoted vertically, as at m, to the link 6 of the toggle-jointp in suitable proximity to the knuckle of the said joint. The rod m extends normally into close proximity to the inner end wall of the chamber of the case jand is there provided with a head or shoulder x and, as shown, the said rod at its opposite or pivoted end engages a slot 8,form ed in the link 6. A spiral spring to is coiled around and con fined upon the rod 0:, between the shoulder or head 152 and an externally-sorow-threaded ring j", which is screwed into the correspond ingly internally screw-threaded free end of the case j and embraces or surrounds the rod :0. The ringj is therefore removable to accommodate a renewal of the parts contained Within the case j. The spring to is normally under enough tension to hold the toggle-joint p against a stop-forming lug with which the upper side of the slide extension 8' is pro vided, adjacent to the knuckle of the said joint and between the casej and the travel of the block d, but in close proximity to the said case. Preferably the toggle-joint abuts against the stop 8 at its said knuckle, and the links 5 and 6 of the said joint are somewhat out of line in the normal position of the parts in the direction opposite to the direction in which the springw acts upon the said joint.

By the construction hereinbefore described itis obvious that the stop 5 the casej, and its springw and the toggle-joint 19 travel all with the slide 8 during the operation of the said slide.

The pressure-exertingblock d should adequately engage and operate upon the stock or obj out (not shown) to be engaged or pressed against, and the arrangement of the parts is such, therefore, that the said block d shall have been actuated into its pressure-exerting position, as shown, before the slide 3 has completed its travel in the direction of the path of the said block, so that the said block shall be held in engagement with the object operated upon thereby the desired length of time, and obviously the further movement of the said slide in the said direction during the said travel of the slide while the block cl dwells in the performance of its function results in the actuation of the links 5 and G farther out of line against the action of the spring to and away from the stop 8 It is obvious also that should the pressure-exerting block 61 during its forward stroke and before the toggle-links 7t and 7; shall have been actuated into line during the actuation of the toggle-joint formed by the said links toward the stop 01 be arrested by any obstructing matter or otherwise the togglejoint 19 would yield against the action of the spring w, and thereby prevent breakage of or injury to the toggle-joints and connected parts. For instance, if the block (1 during its forward stroke were arrested when the links it and 7c are in the position shown in dotted lines, Fig. I, the toggle-joint 1) would yield, as shown in dotted lines in the said drawings, against the action of the spring w,

and to accommodate the yielding of the toggle-joint p the case is pivotally supported I p from the slide 8, so as to render the said case capable of oscillating in a horizontal plane during the yielding movement of the links of the said joint, and the bed a is cut away or recessed, .as at a, not only to accommodate the oscillation of the case j, but to accommodate the location of the arms 8 during the travel of the slide 3.

What we claim is 1. The combination, with the stationary portion of the machine; a pressure-exerting member capable of reciprocation; means for guiding the said pressure-exerting member; a toggle-joint operatively connected, at one end, with the said pressure-exerting member and attached, at its opposite end, to the stationary portion of the machine; a slide arranged to travel atone side of and toward and from the travel of the aforesaid pressureexerting member and provided, at the bottom, with an extension which is rigid with the slide and projects toward the travel of the said pressure-exerting member; means for guiding the slide, and means for actuating the slide, of another and laterally-yieldable toggle-joint arranged over the said slide extension and operatively connected with the slide at one end and operatively attached, at its opposite end, to the first-mentioned toggle-joint and normally having its links somewhat out of line; a stop-forming member provided upon the slide extension and arranged to prevent the movement of the said links into line, and yieldable means acting to retain the said links in their normal position.

2. The combination, with the stationary portion of the machine; a pressure-exerting block capable of reciprocation; means for guiding the said block; a toggle-joint oper atively connected, at one end, with the said block and attached, at its opposite end, to the stationary portion of the machine; a slide arranged to travel at one side of and toward and from the travel of the aforesaid block and provided, at the bottom, with an extension which is rigid with the slide and projects toward the travel of the said block and has a stop-forming lug upon its upper side; means for guiding the slide, and means for actuating the slide, of another and laterally-yieldable toggle-joint arranged over the slide extension and operatively connected with the slide at one end and operatively attached, at its opposite end, to the first-mentioned toggle-joint; yieldable means acting to retain the second-mentioned toggle-joint in its nor mal position, and the arrangement of the parts being such that the links of the said second-mentioned toggle-joint, in the normal position of the parts, abut againstthe aforesaid lug and are somewhat out of line in the direction opposite to the direction of action upon the said toggle-joint by the means which, as aforesaid, acts to retain the said togglejoint in its normal position.

3. The combination, with the stationary portion of the machine; a pressure-exerting block capable of reciprocation; means for guiding the said block; avtoggle-joint operatively connected, at one end, with the said block and attached, to the stationary portion of the machine; a slide capable of reciprocation and arranged to travel at one side of and toward and from the travel of the aforesaid block; meansfor guiding the slide, of another and laterally-yieldable toggle-joint operatively connected with the slide at one end and operatively and directly attached, at its opposite end, to the first-mentioned togglejoint and having its links normally out of line laterally in one direction; a stop arranged to prevent the movement of the said links into line in the opposite direction, and yieldable means acting to retain the said secondmentioned toggle-joint in engagement with the said stop.

4. The combination, with the stationary portion of the machine; a pressure-exerting block capable of reciprocation; means for guiding the said block; a toggle-joint operatively connected, at one end, with the said block and attached, at its opposite end, to the stationary portion of the machine; a slide capable of reciprocation and arranged to travel at one side of and toward and from the travel of the aforesaid block; means for guiding the said slide, and means for actuating the slide,of another and yieldable toggle-j oint operatively connected with the slide at one end and operatively attached, at its opposite end, to the first-mentioned toggle-joint and having its links normally out of line; a stop arranged to prevent the movement of the said links into line and carried by the slide; a rod pivotally attached, at one end, to one of the said links; a case surrounding the said rod; a spiral spring confined and coiled upon the said rod within the said case and acting to retain the second-mentioned toggle-joint against the aforesaid stop, and the said case being pivotally supported from the slide and the arrangement of the parts being such that the said case shall be capable of oscillating during the yielding of the second-mentioned toggle-joint against the action of the aforesaid spring.

5. The combination, with the stationary portion of the machine; a pressure-exerting block capable of reciprocation; means for guidingthe said block; a toggle-jointoperatively connected, at one end, with the said block and attached, at its opposite end, to the stationary portion of the machine;v a slide capable of reciprocation and arranged to travel at one side of and toward and from the travel of the aforesaid block, which slide is provided, at the-bottom, with an extension which projects toward the travel of the pressure-exerting block, of another and laterallyyieldable toggle-joint arranged over the slide extension and vertically pivoted to the slide at one end and directlyattached, at its opposite end, to the first-mentioned toggle-joint and having its links normally somewhat out of line; a stop provided upon the slide extension and arranged to prevent the movement of the said links into line and a suitably-ap plied spring acting to retain the second-mentioned toggle'joint in engagement with the said stop.

6. The combination, with the stationary portion of the machine; a pressure-exerting block capable of reciprocation; means for guiding the said block; a toggle-jointoperatively connected, at one end, with the said block and attached, at its opposite end, to the stationary portion of the machine; a slide capable of reciprocation and arranged to travel at one side of and toward and from the travel of the aforesaid block and provided, at the bottom, with an extension whichprojects toward the travel of the pressure-exerting block and is provided, at one side, with two arms arranged one above the otherand a suitable distanceapart, and has a stop-forming lug; meansfor guiding the slide, and means for actuating the slide, of another and latel ally yieldable toggle-joint arranged over the slide extension and operatively connected with the slide at one end and operativelyat tached, at its opposite end, to the first mentioned toggle-joint and normally having its links somewhat out of line and engaging the aforesaid lug; a case arranged longitudinally between and pivoted vertically to the afore* said arms; a rod pivoted vertically at oneend to one of the said links and extending into IIO and longitudinally of the said case, which rod Signed by us at Cleveland, Ohio, this 24th is provided at its free end with a head or day of May, 1902.

shoulder; a ring surrounding the rod at the JOSEPH A. COSTELLO. free end of and attached to the case, and a WILLIAM S. BIDLE.

5 spiral spring coiled around the rod between Witnesses:

the said ring and the aforesaid shoulder or O. H. DORER,

head. 1 TELSA SCHWARTZ. 

